redirect wrapper: Adopt to new squid helper protocol.

[people/teissler/ipfire-2.x.git] / config / urlfilter / redirect_wrapper

diff --git a/config/urlfilter/redirect_wrapper b/config/urlfilter/redirect_wrapper
index a22a0e3f60eb0f23d602583d5f7101ac80cf841a..96cc0a094ba997dc387b5eadf4660e8b41286f38 100644 (file)
--- a/config/urlfilter/redirect_wrapper
+++ b/config/urlfilter/redirect_wrapper
@@ -2,7 +2,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
+# Copyright (C) 2007-2012  IPFire Team  <info@ipfire.org>                     #
 #                                                                             #
 # This program is free software: you can redistribute it and/or modify        #
 # it under the terms of the GNU General Public License as published by        #
@@ -24,26 +24,32 @@
 use strict;
 use IPC::Open2;
 use IO::Handle;
+
+my $redirectors;
+
 require '/var/ipfire/general-functions.pl';
 
 my %proxysettings=();
+$proxysettings{'ENABLE_FILTER'} = 'off';
+$proxysettings{'ENABLE_CLAMAV'} = 'off';
+$proxysettings{'ENABLE_UPDXLRATOR'} = 'off';
 &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 
 # define here your redirectors (use a comma sperated list)
-my @redirectors = "";
-if ( $proxysettings{'ENABLE_FILTER'} eq 'on' && -e '/usr/bin/squidGuard' ){push(@redirectors,"/usr/bin/squidGuard"); }
-if ( $proxysettings{'ENABLE_CLAMAV'} eq 'on' && -e '/usr/bin/squidclamav' ){ push(@redirectors,"/usr/bin/squidclamav"); }
-if ( $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' && -e '/usr/sbin/updxlrator' ) { push(@redirectors,"/usr/sbin/updxlrator"); }
-
-#my $redirectors = [ '/usr/bin/squidclamav', '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];
+if ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/bin/squidclamav', '/usr/sbin/updxlrator' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/bin/squidclamav' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidGuard' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidclamav', '/usr/sbin/updxlrator' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidclamav' ];}
+elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/sbin/updxlrator' ];}
+else  { $redirectors = [ '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];}
 
 # Attention: keep in mind that the order of your redirectors is important.
 # It doesn't make sense to scan for viruses on pages you restrict access to...
 # So place first your tools which restrict access, then the tools which do the
 # content filtering!
 
-#print "Anzahl ".$#redirectors."\n";
-
 ##### no need to change anything below this line #####
 
 # init
@@ -52,24 +58,65 @@ STDOUT->autoflush(1);
 my $line;
 my $return;
 my $i;
+my $debug=0; # enable only for debugging
+
+if ( -e "/var/ipfire/proxy/enable_redirector_debug" ){
+       $debug = 1;
+       writetolog("Urlfilter = ".$proxysettings{'ENABLE_FILTER'}." Clamav = ".$proxysettings{'ENABLE_CLAMAV'}." Updxlrator = ".$proxysettings{'ENABLE_UPDXLRATOR'});
+       }
 
 # open progamms
 my $pidlist = [];
 my $rlist = [];
 my $wlist = [];
-for($i = 1; $i <= $#redirectors; $i++) {
-                         #print "i=".$i." redirector ".$redirectors[$i]."\n";
-        $pidlist->[$i] = open2($rlist->[$i], $wlist->[$i], $redirectors[$i] );
-}
+
+for($i = 0; $i < @$redirectors; $i++) {
+       $pidlist->[$i] = open2($rlist->[$i], $wlist->[$i], $redirectors->[$i]);
+       if ($debug){
+               writetolog("Current redirector is ".$redirectors->[$i]." number ".$i." PID ".$pidlist->[$i]);
+               }
+       }
 
 # wait for data...
 while($line = <>) {
-        for($i = 1; $i <= $#redirectors; $i++) {
-                $wlist->[$i]->print($line);
-                $return = $rlist->[$i]->getline;
-                last if($return ne "\n" and $return ne $line);
-                                                               # break if redirector changes data
-        }
-        print $return;
-}
+       $return = "";
+
+       for($i = 0; $i < @$redirectors; $i++) {
+               $wlist->[$i]->print($line);
+               $return = $rlist->[$i]->getline;
+
+               if ( $return eq "Processing file and database" ){
+                       system("logger -t ipfire 'Emergency - squidGuard not initialised please run squidGuard -C all'");
+                       }
+
+               if ($debug){
+                       my $dline = $line;my $dreturn = $return;chomp $dline;chomp $dreturn;
+                       if ( $return eq $line or $return eq "\n" or $return eq "" ){
+                               writetolog("Request equals result by ".$redirectors->[$i]." ".$dline);
+                               }
+                       else {
+                               writetolog($redirectors->[$i]." answers ".$dreturn."\n   Querried ".$dline);
+                               }
+                       }
+
+               # break if redirector changes data
+               if($return ne "ERR\n" and $return ne $line ){
+                       if ( $redirectors->[$i] ne "/usr/sbin/updxlrator"){
+                               if ($debug){
+                                       writetolog($redirectors->[$i]." is stopping querry because block was found.");
+                                       }
+                               $i = @$redirectors;
+                               }
+                       }
+               }
+       print $return;
+       }
+
 exit 0;
+
+sub writetolog {
+       open(DATEI, ">>/var/log/squid/redirector_debug") || die "Unable to acces file /var/log/squid/redirector_debug";
+       my $log = shift;
+       print DATEI $log."\n";
+       close(DATEI);
+       }